Our house is always associated with comfort and warmth. Especially when it comes to the cold season. Therefore, it is very important to choose heating equipment that corresponds to the peculiarities of your home. Let’s try to figure out which floor gas boilers for home heating will literally become a guarantee of a warm atmosphere. We learn the types, functional characteristics and principles of operation of gas boilers.
Advantages of gas equipment for heating
Gas equipment for heating today is widely used in private homes and country cottages. Elementary, convenience and safety of operation – the main criteria for the popularity of gas heating systems. They have several advantages:
- ease of use (equipment after installation does not need regular maintenance);
- economical use (gas fuel is the most affordable resource);
- automatic regulation of equipment operation;
- high performance;
- impressive service life;
- independent selection of the optimal mode;
- A diverse range of models and manufacturers of gas boilers (reviews of popular manufacturers of devices can be found on the relevant sites).
Modern gas boilers are made of heat-resistant materials (steel, cast iron), which explains their durability. The presence of automatic mode (automatic scheme is in the passport of the device) makes the boilers for home heating safe to use and easy to manage.
For the operation of household gas boilers use gas (liquefied or natural), which gives off heat when burned to the heat exchanger of the device. Water passing through it is heated and distributed through the heating system. According to the location of the boilers are divided into wall and floor. For the installation of floor gas boilers for heating the house is given a special place on the floor or a separate room.
In order to decide which floor boiler is best suited for your home, you need to have an idea about the types of equipment and the specifics of its work. You can get acquainted with the scheme of the floor gas boiler.
Floor gas boilers are divided into types according to the following characteristics:
- heat exchanger manufacturing material (cast iron, steel);
- type of burner;
- the method of removal of combustion products (atmospheric, forced);
- the number of contours (single-circuit, double-circuit);
- the scheme of movement of the coolant.
The service life of a gas boiler depends on the material of manufacture of the heat exchanger. Resistance to corrosion and burning are characteristic for pig-iron execution. Such a device can last for more than 50 years, but it is a rather fragile product. The steel version is durable and resistant to deformation, but is resistant to corrosion and is subject to rapid burning (up to 15 years).
We study the types and prices of gas boilers for heating a private house. The prices of gas boilers for heating a private house depend on the design used for the manufacture of materials, automation and brand credibility.
The main indicator when choosing a floor gas boiler for heating a private house is the power of the device. This indicator provides the area of the room you want to heat. Today, manufacturers admit boilers of different capacities that can provide heat to both small private houses and complexes from several buildings.
The power floor gas boilers are divided into one-stage, two-stage and modulation (with smooth regulation). The two-stage boiler is equipped with two power modes. The scheme of the modulation setup is designed so that it is possible to adjust the power, smoothly changing it. For private houses with a small area (or with temporary residence) such boilers have received positive feedback. What kind of floor gas boiler is better for heating private homes in your area, consult a specialist.
Helpful advice! In order not to doubt the chosen power of the boiler, the calculation should be performed exclusively by a heating engineer of a company specializing in this area.
For the user, it will be sufficient to have an idea that to provide 10 squares of heat to the room (up to three meters high) there will be enough 1 kW of power. This value is valid for a well-insulated house. If your house is not one, you should choose a more powerful boiler. The choice of capacity also depends on whether the equipment is supposed to be involved in providing hot water. If this is implied, then the power rate increases from 20% to 50%. Owners of swimming pools with heating function need to focus on the choice of a double-circuit boiler with increased capacity for this load. The rating characteristics of the boiler power are indicated for the nominal pressure. If the pressure is weak, then, respectively, the capacity of the unit will decrease.
When choosing a floor gas boiler for heating a private house, it will be necessary to determine the type and device of the equipment. Two options are offered: one-circuit and two-circuit. Single-circuit gas boilers for heating a private house are designed only for heating the heating system. Their design is such that they will not be able to function to provide hot water. Therefore, it will be necessary to additionally purchase a device for heating water or to acquire models with an integrated boiler.
As for double-circuit gas boilers for heating a private house, they can work on heating the heating system and water for domestic needs.
The device of a gas floor double-circuit boiler for heating a house:
- gas stove;
- heat exchanger;
- expansion tank;
- circulation pump.
The double-circuit boiler operates in such a way that, if water is needed, the heating system is turned off and the equipment operates to supply hot water. Since the use of hot water is not constant, the temperature in the heating system does not change significantly. The device diagram shows that for correct operation of the equipment, it is necessary to connect the boiler to the heating system and bring it to the hot-water mixers.
Helpful advice! When installing a double-circuit floor boiler in a private house, it is necessary to take into account the length of the pipe from the appliance to the hot water tap. Maximum length should not exceed seven meters..
Floor gas boiler is large in size and weight. Under it, you should arrange a place on the floor in the house (arrange / reinforce the screed) or place it in a separate room, and also provide it with a separate exhaust channel to remove the spent combustion products of fuel.
If there is no centralized hot water supply in your house, then it is better to choose efficient gas double-circuit floor boilers, which follows from the reviews.
According to the functional principle, gas heating devices for heating are divided into convection and condensing models. The convection boiler is different in that with the combustion products, the steam that arises from the combustion of gas is removed externally. In condensation models, steam and combustion products are directed through a heat exchanger, in which steam condenses and releases additional heat. Which of these boilers is better not definitely say, since the convection does not have the risk of corrosion due to condensate. For their production, you can use less expensive material and their price is much lower (as evidenced by reviews). In addition, combustion products are removed by natural draft.
Condensing boilers have a high efficiency due to the use of additional heat, but at the same time, heating systems must be equipped with overall and expensive heating radiators. User feedback will help you to find out which option is better.
Combustion chambers in gas boilers can be closed or open. In convection equipment both types of chambers are used. In the condensation – only a closed-type combustion chamber.
In open chambers due to natural draft, the combustion air is taken from the room where the boiler is installed and removed through the chimney. These devices use atmospheric burners. Devices with an open chamber should be mounted only in a separate room and provided with a vertical chimney. Judging by the reviews, the cost of such boilers is quite low.
Helpful advice! When choosing a boiler with an atmospheric burner, consider the fact that they work almost silently and for a long time, but at the same time they burn oxygen in the room.
Floor bypass gas boilers with a closed combustion chamber can be installed directly in a heated room. Forced draft is used here – an electric fan pulls out the waste products from the combustion chamber. The flue has two pipes (one inside the other): an external pipe for air intake, an internal pipe for exhaust. The performance of such boilers is very high, but such units work only in the presence of electricity. Feedback from users on such equipment is positive.
Schemes of heating systems in the house are developed taking into account what kind of coolant circulation is supposed – natural or forced.
Natural – based on the difference in the density of water of different temperatures. Such a scheme is used when the location of the boiler is available at a level below the radiators and it is observed that the forward and reverse wiring of the system is appropriate for circulation.
Heating wiring diagrams are one-pipe and two-pipe. In the one-pipe wiring scheme, the heating elements have different temperatures: the lower radiators get the water already partially cooled. And if the house has more than one floor, then the temperature of the radiators of each floor will be different. To avoid this, additional expansion of sections or mounting of a jumper will help. With a single pipe wiring system, a small amount of material is consumed. This layout is usually used for small houses.
Two-pipe wiring requires a large consumption of materials, but at the same time the heating elements are heated the same way. The system of double-pipe wiring allows you to adjust the temperature of the water in different rooms with the help of shut-off valves.
For heating systems with artificial circulation is characterized by the use of a pump, and therefore its operation depends on the power supply. Radiators in such a system are also heated unevenly and air jams may form. Artificial circulation systems are simple and easy to install.
Floor gas boilers are the most economical equipment for home heating. In order for the heating system to suit the characteristics of your home, it is required to make an exact calculation and on its basis choose the best variant of the system. Mandatory condition – the calculation is made by a specialist.